马永佳. 寻找守护神: Looking for your angle. 河北少年儿童出版社.
Chicago Style aipamena马永佳. 寻找守护神: Looking for Your Angle. 河北少年儿童出版社.
MLA aipamena马永佳. 寻找守护神: Looking for Your Angle. 河北少年儿童出版社.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena